// Created on: 2004-04-08
// Created by: Sergey ZARITCHNY
// Copyright (c) 2004-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.


#include <BinMNaming_NamedShapeDriver.hxx>
#include <BinObjMgt_Persistent.hxx>
#include <BinTools_LocationSet.hxx>
#include <BinTools_ShapeSet.hxx>
#include <Message_Messenger.hxx>
#include <Standard_DomainError.hxx>
#include <Standard_Type.hxx>
#include <TCollection_AsciiString.hxx>
#include <TDF_Attribute.hxx>
#include <TDF_Label.hxx>
#include <TNaming_Builder.hxx>
#include <TNaming_Evolution.hxx>
#include <TNaming_Iterator.hxx>
#include <TNaming_NamedShape.hxx>
#include <TopAbs_Orientation.hxx>
#include <TopoDS_Shape.hxx>

IMPLEMENT_STANDARD_RTTIEXT(BinMNaming_NamedShapeDriver,BinMDF_ADriver)

#define SHAPESET "SHAPE_SECTION"
#define FORMAT_NUMBER 3
//=======================================================================
static Standard_Character EvolutionToChar(const TNaming_Evolution theEvol)
{
  switch(theEvol) {
    case TNaming_PRIMITIVE    : return 'P';
    case TNaming_GENERATED    : return 'G';
    case TNaming_MODIFY       : return 'M';
    case TNaming_DELETE       : return 'D';
    case TNaming_SELECTED     : return 'S';
    case TNaming_REPLACE      : return 'M'; // for compatibility case TNaming_REPLACE      : return 'R';
  default:
    throw Standard_DomainError("TNaming_Evolution:: Evolution Unknown");
  }
}

//=======================================================================
static TNaming_Evolution EvolutionToEnum(const Standard_Character theEvol)
{
  switch(theEvol) {
    case 'P': return TNaming_PRIMITIVE;
    case 'G': return TNaming_GENERATED;
    case 'M': return TNaming_MODIFY;
    case 'D': return TNaming_DELETE;
    case 'S': return TNaming_SELECTED;
    case 'R': return TNaming_MODIFY; //for compatibility //TNaming_REPLACE;
  default:
    throw Standard_DomainError("TNaming_Evolution:: Evolution Unknown");
  }
}
//=======================================================================
static Standard_Character OrientationToChar(const TopAbs_Orientation theOrient)
{
  switch(theOrient) {
    case TopAbs_FORWARD    : return 'F';
    case TopAbs_REVERSED   : return 'R';
    case TopAbs_INTERNAL   : return 'I';
    case TopAbs_EXTERNAL   : return 'E';
  default:
    throw Standard_DomainError("TopAbs_Orientation:: Orientation Unknown");
  }
}
//=======================================================================
static TopAbs_Orientation CharToOrientation(const Standard_Character  theCharOrient)
{
  switch(theCharOrient) {
    case 'F':  return TopAbs_FORWARD;
    case 'R':  return TopAbs_REVERSED;
    case 'I':  return TopAbs_INTERNAL;
    case 'E':  return TopAbs_EXTERNAL;
  default:
    throw Standard_DomainError("TopAbs_Orientation:: Orientation Unknown");
  }
}

//=======================================================================
static void TranslateTo (const TopoDS_Shape&            theShape,
                         BinObjMgt_Persistent&          theResult,
                         BinTools_ShapeSet&            theShapeSet)
{
  // Check for empty shape
  if (theShape.IsNull()) {
    theResult.PutInteger(-1);
    theResult.PutInteger(-1);
    theResult.PutInteger(-1);
    return;
  }
  // Add to shape set both TShape and Location contained in <theShape>
  const Standard_Integer aTShapeID = theShapeSet.Add (theShape);
  const Standard_Integer aLocID =
    theShapeSet.Locations().Index (theShape.Location());

  // Fill theResult with shape parameters: TShape ID, Location, Orientation
  theResult << aTShapeID;
  theResult << aLocID;
  theResult << OrientationToChar(theShape.Orientation());
}
//=======================================================================
static int TranslateFrom  (const BinObjMgt_Persistent&  theSource,
                         TopoDS_Shape&                  theResult,
                         BinTools_ShapeSet&            theShapeSet)
{
  Standard_Integer aShapeID, aLocID;
  Standard_Character aCharOrient;
  Standard_Boolean Ok = theSource >> aShapeID; //TShapeID;
  if(!Ok) return 1;
  // Read TShape and Orientation
  if (aShapeID <= 0 || aShapeID > theShapeSet.NbShapes())
    return 1;
  Ok = theSource >> aLocID;
  if(!Ok) return 1;
  Ok = theSource >> aCharOrient;
  if(!Ok) return 1;
  TopAbs_Orientation anOrient = CharToOrientation(aCharOrient);

  theResult.TShape      (theShapeSet.Shape(aShapeID).TShape());//TShape
  theResult.Location    (theShapeSet.Locations().Location (aLocID)); //Location
  theResult.Orientation (anOrient);//Orientation
  return 0;
}

//=======================================================================
//function : BinMNaming_NamedShapeDriver
//purpose  : Constructor
//=======================================================================

BinMNaming_NamedShapeDriver::BinMNaming_NamedShapeDriver
                        (const Handle(Message_Messenger)& theMsgDriver)
     : BinMDF_ADriver (theMsgDriver, STANDARD_TYPE(TNaming_NamedShape)->Name()), myShapeSet(Standard_False),myFormatNb(FORMAT_NUMBER)
{
}

//=======================================================================
//function : NewEmpty
//purpose  : 
//=======================================================================

Handle(TDF_Attribute) BinMNaming_NamedShapeDriver::NewEmpty() const
{
  return new TNaming_NamedShape();
}

//=======================================================================
//function : Paste
//purpose  : persistent => transient (retrieve)
//=======================================================================

Standard_Boolean BinMNaming_NamedShapeDriver::Paste
                                (const BinObjMgt_Persistent&  theSource,
                                 const Handle(TDF_Attribute)& theTarget,
                                 BinObjMgt_RRelocationTable&  ) const
{
  Handle(TNaming_NamedShape) aTAtt= Handle(TNaming_NamedShape)::DownCast(theTarget);
  Standard_Integer aNbShapes;
  theSource >> aNbShapes;
  TDF_Label aLabel = theTarget->Label ();
  TNaming_Builder   aBuilder   (aLabel);
  Standard_Integer aVer;
  Standard_Boolean ok = theSource >> aVer;
  if(!ok) return Standard_False;
  aTAtt->SetVersion(aVer); //Version
  Standard_Character aCharEvol;
  ok = theSource >> aCharEvol;
  if(!ok) return Standard_False;
  TNaming_Evolution anEvol  = EvolutionToEnum(aCharEvol); //Evolution
  aTAtt->SetVersion(anEvol);

  BinTools_ShapeSet& aShapeSet = (BinTools_ShapeSet&) myShapeSet;

  NCollection_List<TopoDS_Shape> anOldShapes, aNewShapes;
  for (Standard_Integer i = 1; i <= aNbShapes; i++)
  {
    TopoDS_Shape anOldShape, aNewShape;

    if (anEvol != TNaming_PRIMITIVE)
      if (TranslateFrom (theSource, anOldShape, aShapeSet)) return Standard_False;

    if (anEvol != TNaming_DELETE)
      if (TranslateFrom (theSource, aNewShape, aShapeSet)) return Standard_False;

    // Here we add shapes in reverse order because TNaming_Builder also adds them in reverse order.
    anOldShapes.Prepend (anOldShape);
    aNewShapes.Prepend (aNewShape);
  }

  for (NCollection_List<TopoDS_Shape>::Iterator anOldIt (anOldShapes), aNewIt (aNewShapes);
      anOldIt.More() && aNewIt.More();
      anOldIt.Next(), aNewIt.Next())
  {
    switch (anEvol)
    {
      case TNaming_PRIMITIVE:
        aBuilder.Generated (aNewIt.Value ());
        break;
      case TNaming_GENERATED:
        aBuilder.Generated (anOldIt.Value(), aNewIt.Value());
        break;
      case TNaming_MODIFY:
        aBuilder.Modify (anOldIt.Value(), aNewIt.Value());
        break;
      case TNaming_DELETE:
        aBuilder.Delete (anOldIt.Value());
        break;
      case TNaming_SELECTED:
        aBuilder.Select (aNewIt.Value(), anOldIt.Value());
        break;
      case TNaming_REPLACE:
        aBuilder.Modify (anOldIt.Value(), aNewIt.Value()); // for compatibility aBuilder.Replace(anOldShape, aNewShape);
        break;
      default:
          throw Standard_DomainError("TNaming_Evolution:: Evolution Unknown");
    }
  }
  return Standard_True;
}

//=======================================================================
//function : Paste
//purpose  : transient => persistent (store)
//=======================================================================

void BinMNaming_NamedShapeDriver::Paste (const Handle(TDF_Attribute)& theSource,
                                         BinObjMgt_Persistent&        theTarget,
                                         BinObjMgt_SRelocationTable&  ) const
{
  Handle(TNaming_NamedShape) aSAtt= Handle(TNaming_NamedShape)::DownCast(theSource);

  //--------------------------------------------------------------
  Standard_Integer NbShapes = 0;
  for (TNaming_Iterator SItr (aSAtt); SItr.More (); SItr.Next ()) NbShapes++;
  //--------------------------------------------------------------

  BinTools_ShapeSet& aShapeSet = (BinTools_ShapeSet&) myShapeSet;
  TNaming_Evolution anEvol = aSAtt->Evolution();
  
  theTarget << NbShapes;
  theTarget << aSAtt->Version();
  theTarget << EvolutionToChar(anEvol);
 

  Standard_Integer i = 1;  
  for (TNaming_Iterator SIterator(aSAtt) ;SIterator.More(); SIterator.Next()) {
    const TopoDS_Shape& OldShape = SIterator.OldShape();
    const TopoDS_Shape& NewShape = SIterator.NewShape();
    
    if ( anEvol != TNaming_PRIMITIVE ) 
      TranslateTo (OldShape, theTarget, aShapeSet); 

    if (anEvol != TNaming_DELETE) 
      TranslateTo (NewShape, theTarget, aShapeSet);
    
    i++;
  }

}


//=======================================================================
//function : WriteShapeSection
//purpose  : 
//=======================================================================

void BinMNaming_NamedShapeDriver::WriteShapeSection (Standard_OStream& theOS)
{
  theOS << SHAPESET; 
  myShapeSet.SetFormatNb(myFormatNb);
  myShapeSet.Write (theOS);
  myShapeSet.Clear();
}

//=======================================================================
//function : Clear
//purpose  : 
//=======================================================================

void BinMNaming_NamedShapeDriver::Clear()
{
  myShapeSet.Clear();
}

//=======================================================================
//function : ReadShapeSection
//purpose  : 
//=======================================================================

void BinMNaming_NamedShapeDriver::ReadShapeSection (Standard_IStream& theIS)
{
  // check section title string; note that some versions of OCCT (up to 6.3.1) 
  // might avoid writing shape section if it is empty
  std::streamoff aPos = theIS.tellg();
  TCollection_AsciiString aSectionTitle;
  theIS >> aSectionTitle;
  if(aSectionTitle.Length() > 0 && aSectionTitle == SHAPESET) {
    myShapeSet.Clear();
    myShapeSet.Read (theIS);
    SetFormatNb(myShapeSet.FormatNb());
  }
  else
    theIS.seekg(aPos); // no shape section is present, try to return to initial point
}
